build(deps): bump django from 5.1.7 to 5.1.15

Bumps [django](https://github.com/django/django) from 5.1.7 to 5.1.15.
- [Commits](django/django@5.1.7...5.1.15)

---
updated-dependencies:
- dependency-name: django
  dependency-version: 5.1.15
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

requirements.txt

@@ -1,5 +1,5 @@
 sseclient
-django==5.1.7
+django==5.1.15
 django-bulk-update==2.2.0
 django-redis-cache==3.0.1
 django-cache-machine==1.2.0